PD30-1M distribution system is suitable for circuit of AC 50/60 Hz, rated voltage up to AC 660V, rated current up to 125A of distributing control of modern building such as large office mansion, hotel, commerce department, industrial and mining enterprises and so on. It can protect electric appliances from overload voltage & current. It also can short and frequent switch ON/OFF under normal operating condition. It is one of the most reliable general distribution systems in the world. 1 phase 4lines, 6lines, 8lines, 12lines, and 3phase 9lines, 12lines, 18lines, 24lines, 36lines are available.